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QUESTION 52
You are working on an app that will save the device metrics produced every minute by various IoT devices.
You decide to collect the data for two entities; the devices and the device metrics produced by each device.
You were about to create two containers for these identified entities but suddenly your data engineer suggests placing both entities in a single container, not in two different containers.
What would you do?
A. Create a document with the deviceid property and other device data, and add a property called ‘type’ having the value ‘device’. Also, create another document for each metrics data collected using devicemetricsid property.
B. Create a document with the deviceid property and other device data. After that embed each metrics collection into the document with the devicemetricsid property and all the metrics data.
C. Create a document with the deviceid property and other device data, and add a property called “type” with the value ‘device’. Create another document for each metrics data using the devicemetricsid and deviceid properties and add a property called “type” with the value devicemetrics.
D. None of these.
Answer: C
Explanation:
If you create two different types of documents including the property ‘deviceid’ for both entities, it will ease referencing both entities inside the container.